Electroslag refining starter

Abstract

An electroslag refining starter includes a refined disk fixedly joined in a central aperture of a mounting ring. The mounting ring supports the starter in a crucible below an ingot being electroslag refined. The disk is consumed during starting and is replaceable in the same mounting ring for subsequent reuse.

What is claimed is: 
     
       1. An electroslag refining starter comprising an imperforate refined disk fixedly joined to a coplanar mounting ring therearound. 
     
     
       2. A starter according to claim 1 wherein said ring comprises a different material composition than said disk. 
     
     
       3. A starter according to claim 2 wherein said ring includes opposite upper and lower surfaces having a substantially flat machined finish. 
     
     
       4. A starter according to claim 3 wherein said disk includes opposite upper and lower surfaces, at least one of which has a flat finish with larger variations than said ring finish. 
     
     
       5. A starter according to claim 4 wherein said disk is welded to said ring for carrying electrical current therebetween during starting of electroslag refining.